Ok after having a good chat with Adrian from Car Accessory Installs about RF Punch 6.5" subwoofers and fully active front stages, i have considered it.

So consider this

I am soon to be the proud owner of an Alpine CDA-7897. This can be set to full active meaning the rcas aren't front/rear/sub they are actually high/mid/treb. so doing away with rears altogether.
Adrians car runs a setup similar to this (he has 7998 and 3 way front stage, currently putting the RF 6.5" subs in!

So by getting the splits i want and ditching the crossovers, and using the RF subs do any of you guys think i will have a pretty mean front stage.

I know that then i will need an amp for each speaker so 6 channels altogether, or 5 channels and have the subs mono, but the HU allows for stereo or monoaural Sub output, so would i be better to go for the stereo set up??

also what sort of power rated amps should i be looking for seeing as the splits are rated at 100wrms (don't know what the individual rating for tweets and mids are) and the RF subs are rated at 150wrms each.

I am willing to buy amps to run them all, but i don't want to waste money on an amp that is way too overrated for what it is doing, ive got better things to waste my money on then. I am looking at V12 amps at the moment as they seem fairly good

I will try just normal setupand fully active with my current splits and see how they feel. but its not gonna give me an indication cos they are nothing in comparison to the splits i will be getting

so are you going to use the RF subs with the infintiy 6.5" splits?

what bandwidth (freq range) will each driver be given do you think?

one problem could be getting the subs to play subbass effectively:
*door cavity as the enclosure: ideally should be very solid and sealed, but difficult to achieve
*door rattles and resonance could be a problem with subbass

if you are going to use the RF subs for midbass drivers, i just wonder how well they will perform with the higher frequency midbass (ie: up to 500Hz or wherever the midrange will take over). subs typically aren't designed to play that high with much fidelity, although these RF drivers may be ok (i don't know them).

lastly, what are you hoping to achieve here that a dedicated boot-mounted sub won't achieve? again, if it's more midbass upfront, then perhaps there's better drivers for the job? it may be worth waiting to hear how this guy's setup turns out.

powerwise, i'd be thinking along the lines of 50~100WRMS on tap for the midrange/woofer and tweeter. then 100~150WRMS on tap for the subs.

interesting setup, so look forward to hearing of the results.

good luck

Well these are a proper subwoofer even though they are 6.5" so you can do what you want with them sealed, ported what ever. I think the specs say a .32 cuft enclosure.

I will still be running a boot mounted sub (IE 12.1D infinity)

what i am meaning of this setup is a 3 way setup (now im not sure wether to get 6.5 or 5.25" splits) to get sub bass up on the front stage.

its not gonna be driving earthquaking sub frequencys, more like have the boot sub as the main low freq and have these 6.5" subs as fill for the front and crossed over bit higher than the main sub.

I will definatelly wait to see adrians setup with these in it before i lay my money down

Just open to arguments before i splurge in my wallet.

Also im no longer inporting the MRP-M350 amp as adrian is getting them in for less than i was getting them for and has them in stock next week.
jeeze they are an improvement!!!

might i sujest, rather than a 6.5" sub, run a dedicated 8" Midbass driver per door in stereo(Vertis. Morel, ID, Orion, Dynaudio etc).

which is part of my query. coz you are suggesting the RF sub will in fact be used as a midbass woofer. which to me is not ideal for that particular driver; that is, i don't expect it's designed for midbass so much as subbass. it may struggle to reproduce 500Hz with much clarity. then again, as i previously mentioned, i could be wrong, and what adrian has in mind could work nicely.

i suppose auditioning it will be the proof of the pudding.

and yes, walki's suggestion was what i was politely trying to avoid suggesting. sceptical bastard.